Cement mixture



66. ECOMPOSITIONS,

COATING OR PLASTIC.

as ing Feb. 22, 1927.

tin

whereby it is capable of use as an efiicient chloride with water, tosecure a speci UNITED STATES PATENT (OFFICE.

munnnrcx a. cmars'rmxsan, or mrmerox 243x, camroaxm.

cmmxr nrx'runza.

natural state with water and cement, it acts to prevent the cement fromsetting or getg hard. In my pending application, Serial No. 522,144, 1have set forth a method vegetable substance having capillaries,

filler. In this application I am not proposing to treat the saw dust orother matter permits the cement to set or become hard in its usualmanner when mixed with water.

I have discovered that by mixing calcium 0 grav- 1 y or ensity 0approximately 1.0016, that this water can be used with a mixture ofcement and saw dust with the desired result e saw ust 1s afiected insuch manner that it mixes as a filler with the cement, thus producing amixture which is of special Wiile, and the like. he advantages had fromthe use of saw dust or like matter is that there is less chance oftreating the saw dust, and other natural separately or in the samemanner, but use an additional ingredient which ofl'sets the detrimentaleflect of the natural saw dust and causes it to mix well as a filler andit of so t 7 Ho Drawing. Application filed April 26, 1922, Serial No.556,758. Renewed Dctober 22, 18%.

for the surface .check or crack, as sometimes happens where cement, orcement and sand have been used together. Color matter of any suitablekind can bermixed'therewith so as to provide a face coating for brickand tile in various colors, thus not only making the face of the articlecoated therewith water proof, but alsomaking it in desired colors fordecorative purposes. 4 V I claim: 7 I, 1. The herein described processof preparing a composition ofmatter which consistsinfirst :n n n 0-proportions to give a V- then. mixing I I V l l I whereby to causesawdust with said cement.

2. The process of preparing a sawdust and cement composition whichconsists in first mixing water and calcium chloride, and then using saidwater mixture as the moistening medium and mixing sawdust and cementtherewith whereby the water and calcium chloride mixture causes saidsawdust to mix with said cement.

Signed at Los Angeles, California, this 21st da of April, 1922.

FR DERICK H. CHRISTIANSEN.

